A viewer of sister station KETV shared a video showing a large tornado crossing an interstate in Nebraska. Severe storms are moving across the state prompting tornado warnings, including one that Mike Marvin witnessed crossing Interstate 80.Multiple tornadoes were reported in Nebraska but the most destructive storm moved from a largely rural area into suburbs northwest of Omaha, a city of 485,000 people.Photos on social media showed heavily damaged homes and shredded trees. Video showed homes with roofs stripped of shingles, in a rural area near Omaha. Law enforcement officers were blocking off roads in the area.KETV reported that thousands of people are without power, and numerous power lines have been reported down.